I am now clear on which [print] object belongs to GridFlow I tried to get the .help file for the [print] and got the following: tried /usr/lib/pd/extra/gf.print.pd and failed sorry, couldn't find help patch for "gf.print.pd" so it seems that [print] is actually 'gf.print.pd' while [pd/print] is actually print.pd not too confusing! ;)